41 lines
1.0 KiB
JavaScript
41 lines
1.0 KiB
JavaScript
const vue = new Vue({
|
|
el: "#app",
|
|
data: {
|
|
books: [
|
|
{ bid: 1, bname: "《算法导论》", datas: "2006-9", price: 85.00, count: 0 },
|
|
{ bid: 2, bname: "《UNIX编程艺术》", datas: "2006-2", price: 59.00, count: 0 },
|
|
{ bid: 3, bname: "《编程珠玑》", datas: "2008-10", price: 39.00, count: 0 },
|
|
{ bid: 4, bname: "《代码大全》", datas: "2006-3", price: 128.00, count: 0 }
|
|
],
|
|
},
|
|
methods: {
|
|
isAddBtn(index){
|
|
this.books[index].count+=1
|
|
},
|
|
isRemovedBtn(index){
|
|
this.books[index].count-=1
|
|
},
|
|
isRemove(index){
|
|
this.books.splice(index,1)
|
|
}
|
|
},
|
|
filters:{
|
|
Filterprice(val){
|
|
return "￥" + val.toFixed(2)
|
|
}
|
|
},
|
|
// filter过滤
|
|
//map 映射（数据操作）
|
|
//reduce 汇总
|
|
computed:{
|
|
TotalPrice(){
|
|
let sum=0
|
|
for(let i=0;i<this.books.length;i++){
|
|
if (this.books[i].count != 0 && this.books[i].count>=0){
|
|
sum+=this.books[i].price*this.books[i].count
|
|
}
|
|
}
|
|
return sum
|
|
}
|
|
}
|
|
}) |